ArcTan by WaveParadigm is a game where you, a green ball, must navigate through various objects in order to reach a finish line. There are 12 levels, and you see more and more different objects as you go along. Death is caused by either touching the black floor, or the red floor.

Entities

Spinner - The spinner is an object that the green ball can grab onto. The ball will rotate in the same direction as the spinner. When you tap the screen, the ball will release at the point of tapping. It will carry the momentum generated by the spinner. Grey spinners rotate clockwise, white spinners rotate anti-clockwise.
Light Grey Floor - The floor is mainly used for the green ball to roll over. Note that you cannot jump on the floor.
Green Floor - The green floor is a floor that bounces the ball when you land on it. Note that you cannot use jump to boost the jump.
Red Floor - The red floor will appear as an obstacle around the other entities. Touching this surface will result in death.